1、Designation:D141109Standard Test Methods forWater-Soluble Chlorides Present as Admixtures in GradedAggregate Road Mixes1This standard is issued under the fixed designation D1411;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the yea
2、r of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 These test methods are applicable to the determinationof water-soluble calcium,magnesium,and sodium chloridesused as
3、admixtures in the preparation of graded aggregate roadmaterials.1.1.1 Method A,Total ChloridesAdd an excess of astandard silver nitrate solution to the filtered sample;backtitrate the excess silver with a standard ammonium thiocyanatesolution to a red-orange endpoint using Volhard indicator.1.1.2 Me
4、thod B,Calcium ChlorideCalcium in an alkalinesolution is titrated with standard EDTA solution using calceinmodified as an indicator.The color change is from green toblue.1.1.3 Method C,Magnesium ChlorideCalcium and mag-nesium,in a solution buffered to a pH of 10,are titrated withstandard EDTA soluti
5、on using eriochrome black T as anindicator.The color change is from red to blue.Magnesiumchloride is calculated by subtracting the EDTAcalcium equiva-lent volume determined in the analysis for calcium chloridefrom the total EDTA volume used,to obtain the magnesiumEDTA equivalent by difference.1.1.4
6、Method D,Alkali ChlorideAlkali chlorides are cal-culated from the difference of the total chloride and calciumand magnesium determinations.NOTE1These test methods assume that the aggregate did not containsignificant amounts of the water-soluble chlorides in question before theadmixture was added.If
7、significant amounts of these chlorides are knownor suspected to be present,the aggregate shall be tested for theseconstituents according to these test methods and the proper correctionsmade.1.2 All observed and calculated values shall conform to theguidelines for significant digits and rounding esta
8、blished inPractice D6026.1.2.1 The method used to specify how data are collected,calculated,or recorded in this standard is not directly related tothe accuracy to which the data can be applied in design or otheruses,or both.How one applies the results obtained using thisstandard is beyond its scope.
9、1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.4 This practice
10、offers a set of instructions for performingone or more specific operations.This document cannot replaceeducation or experience and should be used in conjunction withprofessional judgment.Not all aspects of this practice may beapplicable in all circumstances.This ASTM standard is notintended to repre
11、sent or replace the standard of care by whichthe adequacy of a given professional service must be judged,nor should this document be applied without consideration ofa projects many unique aspects.The word“Standard”in thetitle of this document means only that the document has beenapproved through the
12、 ASTM consensus process.1.5 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Rel
13、ating to Soil,Rock,and ContainedFluidsD1193 Specification for Reagent WaterD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD6026 Practice for Using Significant Digits in GeotechnicalData3.Terminolo
14、gy3.1 Except as follows in 3.2,all definitions are in accor-dance with Terminology D653.1These test methods are under the jurisdiction of Committee D18 on Soil andRock and are the direct responsibility of Subcommittee D18.15 on StabilizationWith Admixtures.Current edition approved June 1,2009.Publis
15、hed July 2009.Originally approvedin 1956.Last previous edition approved in 2004 as D1411 04.DOI:10.1520/D1411-09.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the stan
16、dards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2 Definitions of Terms Specific to This Standard:3.2.1 admixturein road construction,a material other thanwater,aggregates,hydraulic cement,and fiber reinforcementused as an ingredient and added immediately before or duringthe mixing of road materials.4.Significance and Use4.
